musci. (mosses.) 623 



below the apex; capsule incurved-oblong, annulate. — Bogs, in mountainous 

 districts. (Eu.) 



21. I>. spui'iiim, Hcdw. Stems usually short, thick and condensed; 

 leaves ovate-lanceolate, acuminate, undulated, serrate ; costa serrated on the 

 back above, ceasing below the apex ; capsule cylindrical, slightly strumose and 

 incurved; when dry strongly ribbed. — (D. pallidum, Bryol. Europ.f) — Dry 

 sandy soil, Ohio, and Southern States. (Eu.) 



22. D. umllilututil, Turner. Loosely crespitose; stems 4-6' long, 

 robust; leaves widely spreading, the upper ones falcate-secund, linear-lanceo- 

 late from an oblong base, very much undulated, sharply serrate on the margin 

 and the back near the apex ; costa slender; capsule cylindrical, strongly arcu- 

 ate, on long pedicels, 2 to 5 from the same perichajth. — On the ground, in dry 

 woods ; common. (Eu.) 



23. L>. Dniminoildii, Mull. — Very like No. 22, but distinguished by 

 its longer and narrower leaves, not so sharply serrate, papillose only on the 

 back, and cirrhose-crisped when dry. — White Mountains of New Hampshire, 

 Oakes: Lake Superior, Agassiz. (Eu.) 



15. CERATODOK, Brid. (Tab. 15.) 



Calyptra cuculliform. Operculum conic, subrostellate. Capsule cylindrical, 

 subcernuous, annulate, long-pedicellate. Peristome single: teeth 16, linear- 

 lanceolate, cloven nearly to the base into two equal segments ; their articula- 

 tions prominent. Inflorescence dioecious, terminal: male flower gemmiform. — 

 Densely crespitosc plants, with fastigiate ramification ; leaves lanceolate or lance- 

 olate-subulate, costate ; the areolae above dense, roundish and small, below larger 

 and diaphanous. (Name from icepas, a horn, and oScoi/, a tooth, the teeth of the 

 peristome being nodulose like a goat's horn.) 



1. C piirj>iireus, Brid. Leaves oblong-lanceolate, carinate, the margins 

 recurved ; costa excurrent ; capsule purplish-red, shining, ribbed and strumose 

 •when dry. — Very common everywhere : on the ground. (Tab. 15.) (Eu.) 



Tribe V. LEUCOBRYE^. 



16. LEUCOBBVUM, Hampe. (Tab. 16.) 



Calyptra cuculliform. Operculum with a long-subulate rostrum. Capsule- 

 oblong-cernuous, strumose, long-pedicellate. Peristome as in Dicranum. In- 

 florescence monoecious : male flower terminal. — White or pale-glaueous mosses, 

 growing in dense compact masses ; stems dichotomously branched ; leaves lan- 

 ceolate-subulate, ecostate, composed of two or more layers of large, pellucid, 

 empty, rectangular-oblong, perforated cellules, with minute 3 -4-sidcd intercel- 

 lular chlorophyllose passages. (Name composed of Xev/cos, white, and j3pvov, 

 a moss, from its pallid color.) 



1. L. glaucum, Hampe. Stems 3' -6' high, leaves fragile, crowded, 

 convolute above; capsule reddish-brown, ribbed when dry. — (Dicranum glau- 

 cum, Hedw.) — About the roots of trees in moist ground, margins of swamps, 



